OS 91FX AND BISSON MUFFLER
 

Has anyone used this combination ? I am planning on using this set up in a Hanger 9 P40.How does this muffler compare in performance to the stock muffler ?


THANKS,

Rick

RE: OS 91FX AND BISSON MUFFLER
 

Make certain that you use the one for the 91FX and not the one intended for the 61FX.

RE: OS 91FX AND BISSON MUFFLER
 

w8ye,

I plan on ordering one for the OS 91FX from Tower.

Anyone have experience with this muffler regarding performance ?


THANKS,

Rick

RE: OS 91FX AND BISSON MUFFLER
 

Aftermarket mufflers present problems for the 90 size two strokes.

In most cases a 60 size will bolt up to the engine but they don't have enough internal volume and will cause over heating and detonation.

Then some of the true 90 size ones have the internal volume but do not have enough back pressure for good tank pressure and resulting fuel draw.

I just wanted you to be aware of some peoples experiences. I'm not trying to single out your choice. I am not familiar with yours.

RE: OS 91FX AND BISSON MUFFLER
 

I've had really really good luck with my Slimline Pitts muffler for the OS .91fx in my Goldberg Extra 300. Runs like a top. I have had issues with a Bisson muffler on my Moki 1.8 though.

http://www3.towerhobbies.com/cgi-bin...?&I=LXNB24&P=0